Witness Jen McCabe testified in the Karen Read trial regarding the night Boston police officer John O'Keefe was found dead, with defense claims of a conspiracy against Read, who pleaded not guilty to his murder.

Jurors in Karen Read’s second murder trial heard more testimony Tuesday about location and temperature data recorded on her boyfriend’s cellphone the night she’s accused of killing him. Read is accused of ramming into O’Keefe with her SUV and leaving him for dead in a snowstorm back in January 2022.

Key witness Jen McCabe took the stand Tuesday in the sixth day of witness testimony in the Karen Read trial after a cellphone expert finished his testimony about McCabe's disputed Google search and John O'Keefe's movements the night of his death. When court was done for the day, Judge Beverly Cannone issued a stern warning for defense attorneys.